In the vast outpouring of creativity known as life on earth, animals display more diversity than any other class of organism. For a celebration of the diversity of the animal kingdom, tune in on Sunday, March 29 at 9:30 a.m. PST to http://www.kmud.org. We will explore some of the conditions and relationships that promote this diversity, including the special importance of top carnivores in ecosystems. We will also explore the fundamental need of all animals for sufficient habitat, and ask what island biogeography tells us about habitat size and extinction. We will also explore the relationship between agriculture and the extinction crisis.